Table of Contents
fiascotopnm - Convert compressed FIASCO image to PGM, or PPM
fiascotopnm
[option]... [filename]...
fiascotopnm decompresses the named FIASCO
files, or the Standard Input if no file is named, and writes the images
as PGM, or PPM files, depending on whether the FIASCO image is black and
white or color.
All option names may be abbreviated; for example,
--output may be written --outp or --ou. For all options an one letter short option
is provided. Mandatory or optional arguments to long options are mandatory
or optional for short options, too. Both short and long options are case
sensitive.
- -o[name], --output=[name]
- Write decompressed image to the file
name.ppm (if PPM) or name.pgm (if PGM). If name=- then produce the image file
on the standard output. The optional argument name can be omitted, then
the input filename is used as basename with the suffix .ppm or .pgm. In case
of video streams, the frames are stored in the files name.N.ppm where N is
the frame number (of the form 00..0 - 99..9); output on the standard output
is not possible with video streams.
If name is a relative path and the
environment variable FIASCO_IMAGES is a (colon-separated) list of directories,
then the output file(s) are written to the first (writable) directory of
this list. Otherwise, the current directory is used to store the output
file(s).
- -z, --fast
- Decompress images in the 4:2:0 format; i.e., each chroma
channel is decompressed to an image of halved width and height. Use this
option on slow machines when the desired frame rate is not achieved; the
output quality is only slightly decreased.
- -d, --double
- Double the size of
the X11 window both in width and height; no pixel interpolation is used,
each pixel is just replaced by four identical pixels.
- -p, --panel
- Show a panel with play, stop, pause, record and exit buttons
to control the display of videos. When pressing the record button, all frames
are decompressed and stored in memory. The other buttons work in the usual
way.
- -m N, --magnify=N
- Set magnification of the decompressed image. Positive values
enlarge and negative values reduce the image width and height by a factor
of 2^|N|.
- -s N, --smooth=N
- Smooth decompressed image(s) along the partitioning
borders by the given amount N. N is 1 (minimum) to 100 (maximum); default
is 70. When N=0, then the smoothing amount specified in the FIASCO file
is used (defined by the FIASCO coder).
- -F N, --fps=N
- Set number of frames
per second to N. When using this option, the frame rate specified in the
FIASCO file is overridden.
- -v, --version
- Print fiascotopnm version number,
then exit.
- -f name, --config=name
- Load parameter file name to initialize the
options of fiascotopnm. See file system.fiascorc for an example of the syntax.
Options of fiascotopnm are set by any of the following methods (in the
specified order):
1) Global ressource file /etc/system.fiascorc
2) $HOME/.fiascorc
3) command line
4) --config=name
- -h, --info
- Print brief help, then exit.
- -H, --help
- Print detailed help, then exit.
- fiascotopnm foo.wfa >foo.ppm
- Decompress the FIASCO file "foo.wfa" and store it as "foo.ppm".
- fiascotopnm
-o foo1.wfa foo2.wfa
- Decompress the FIASCO files "foo1.wfa" and "foo2.wfa" and
write the frames to the image files "foo1.wfa.ppm" and "foo2.wfa.ppm".
- fiascotopnm
-oimage foo1.wfa
- Decompress the FIASCO file "foo1.wfa" and write all 15 frames
to the image files "image.00.ppm", ... , "image.14.ppm".
- fiascotopnm --fast --magnify=-1
--double video.wfa >stream.ppm
- Decompress the FIASCO file "video.wfa". The decompression
speed is as fast as possible: the image is decompressed (in 4:2:0 format)
at a quarter of its original size; then the image is enlarged again by
pixel doubling.
- /etc/system.fiascorc
- The systemwide initialization
file.
- $HOME/.fiascorc
- The personal initialization file.
- FIASCO_IMAGES
- Save path for image files. Default is "./".
- FIASCO_DATA
- Search path for FIASCO
files. Default is "./".
pnmtofiasco(1)
, pnm(5)
Ullrich Hafner,
Juergen Albert, Stefan Frank, and Michael Unger. Weighted Finite Automata
for Video Compression, IEEE Journal on Selected Areas In Communications,
January 1998
Ullrich Hafner. Low Bit-Rate Image and Video Coding with Weighted Finite
Automata, Ph.D. thesis, Mensch & Buch Verlag, ISBN 3-89820-002-7, October 1999.
Ullrich Hafner <hafner@bigfoot.de>
Table of Contents